Holley 4 barrel leaking

Discussion in 'Engine Topic' started by bourbon_scotch, Nov 5, 2017.

  1. bourbon_scotch

    bourbon_scotch Veteran Member Lifetime Gold Member

    Jan 10, 2003
    I have a holley 4 barrel vacuum secondarys and its leaking bad all the way around. I've rebuild it once a long time ago and then stopped using it. I'm thinking its not even worth looking at. Just buy a new carb maybe something else?
  2. phat80

    phat80 Veteran Member

    Jan 4, 2013
    Victoria BC
    dried out gaskets...but I'm only guessing.
  3. roeville

    roeville Veteran Member

    Oct 9, 2000
    SF East Bay CA
    Modern gasoline is generally not good on early carb gaskets. You might be able to replace with a current kit and be good to go.
  4. 80sz

    80sz Veteran Member

    Feb 2, 2014
    New gaskets for bowls are 10.00.
  5. COPO

    COPO Veteran Member Lifetime Gold Member

    Sep 15, 1999
    Ontario, Canada
    New blue Holley gaskets don’t dry out. Remove both bowls and the mounting plate and using a machinist file, file the part the metering blocks mount to. You’ll be surprised how not true they are. Use oil while filing too. In ‘85 I spent about 1 hr on each side filing. After that it runs like it should.
  6. muscl car

    muscl car Veteran Member Lifetime Gold Member

    As said gaskets have dried out and shrunk which is causing seepage . throw another carb kit on it and youll be good

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